Well that is definitely a unique question! And I never really explained how tengu skin/feathers work so here you go (sorry I just re-used the same picture I made for his scars). From the wrists and knees down, they just have black skin (like human skin). It’s the same color as their feathers, so I don’t draw any lines to show the difference.
Their feet are similar to human feet (five toes), except they have claws. They’re useful for climbing trees! They’re not useful for wearing socks.
De jisuk - Source 19nov.2013